If you travelling___the customs are really foreign to your own,please do as Roman
If you travelling_______the customs are really foreign to your own,please do as Romans do.
A.in which B.what C.when D.where
为什么不可以选A?
人气：443 ℃ 时间：2020-03-24 17:58:35
解答
这里是状语从句 只能用where 定语从句里面where 和 介词+which才可以互换
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